Python/Numpy之安装指定的版本

安装方式:pip install numpy==版本号
例如:pip install numpy==1.8

问题出现的原因,一次安装matplotlib时,自动安装的1.9版本的numpy,运行时总是报错,报错信息在下方,查询后有说是numpy版本和python版本的问题,卸载重新安装后问题得到解决。

(pyqt5s) F:\>python pyqtmat.py                                                 
 ** On entry to DGEBAL parameter number  3 had an illegal value                                     
 ** On entry to DGEHRD  parameter number  2 had an illegal value                                    
 ** On entry to DORGHR DORGQR parameter number  2 had an illegal value                              
 ** On entry to DHSEQR parameter number  4 had an illegal value                                     
Traceback (most recent call last):                                                                  
  File "pyqtmat.py", line 2, in <module>                                                            
    import matplotlib                                                                               
  File "F:\Anaconda\Anaconda3\envs\pyqt5s\lib\site-packages\matplotlib\__init__.py", line 107, in <m
odule>                                                                                              
    from . import cbook, rcsetup                                                                    
  File "F:\Anaconda\Anaconda3\envs\pyqt5s\lib\site-packages\matplotlib\cbook\__init__.py", line 28, 
in <module>                                                                                         
    import numpy as np                                                                              
  File "F:\Anaconda\Anaconda3\envs\pyqt5s\lib\site-packages\numpy\__init__.py", line 305, in <module
>                                                                                                   
    _win_os_check()                                                                                 
  File "F:\Anaconda\Anaconda3\envs\pyqt5s\lib\site-packages\numpy\__init__.py", line 302, in _win_os
_check                                                                                              
    raise RuntimeError(msg.format(__file__)) from None                                              
RuntimeError: The current Numpy installation ('F:\\Anaconda\\Anaconda3\\envs\\pyqt5s\\lib\\site-pack
ages\\numpy\\__init__.py') fails to pass a sanity check due to a bug in the windows runtime. See thi
s issue for more information: https://tinyurl.com/y3dm3h86                                          

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